55888013 has 2 divisors, whose sum is σ = 55888014. Its totient is φ = 55888012.

The previous prime is 55887989. The next prime is 55888033. The reversal of 55888013 is 31088855.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 41242084 + 14645929 = 6422^2 + 3827^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-55888013 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (55888033) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27944006 + 27944007.

It is an arithmetic number, because the mean of its divisors is an integer number (27944007).

Almost surely, 2^55888013 is an apocalyptic number.

It is an amenable number.

55888013 is a deficient number, since it is larger than the sum of its proper divisors (1).

55888013 is an equidigital number, since it uses as much as digits as its factorization.

55888013 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 38400, while the sum is 38.

The square root of 55888013 is about 7475.8285828395. The cubic root of 55888013 is about 382.3310384804.

The spelling of 55888013 in words is "fifty-five million, eight hundred eighty-eight thousand, thirteen".